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Springboks Gio Aplon and Dean Greyling have been called up for the national squad following injury concerns around Zane Kirchner and Coenie Oosthuizen.
Kirchner injured his knee late in the first half of the first Test in Durban and will not be considered for the second Test in Johannesburg this weekend.
Oosthuizen is struggling with stiffness to his shoulder and neck area - and management is awaiting the results of a scan from last night.
Inside centre Frans Steyn and tighthead prop Jannie du Plessis did not train yesterday but team doctor Craig Robberts said it was only a precautionary measure.
